___competition is a competitive advantage based on factors other than price. A-price
B- perfect
C-nonprice
D-monopolistic

True or false: a fitted model with more predictors will necessarily have a lower training set error than a model with fewer predictors.

In terms of the "great wheel of science", statistics are central to the research process (a) only between the hypothesis phase and the observation phase (b) only between the observation phase and the empirical generalization phase (c) only between the theory phase and the hypothesis phase (d) only between the empirical generalization phase and the theory phase

Which of the following constitute the types of unemployment occurring at the natural rate of unemployment? a. frictional and cyclical unemployment.b. structural and frictional unemployment.c. cyclical and structural unemployment.d. frictional, structural, and cyclical unemployment.